(19)

(11)

EP 2 707 559 A2

(12)

(88) Date of publication A3: 04.10.2012 (43) Date of publication: 19.03.2014 Bulletin 2014/12 (21) Application number: 12742754.0 (22) Date of filing: 11.05.2012

(51) International Patent Classification (IPC):  E04H 15/20(2006.01) (86) International application number: PCT/AU2012/000523 (87) International publication number: WO 2012/103598 (09.08.2012 Gazette 2012/32)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 11.05.2011 AU 2011202180 (71) Applicant: Mcmahon, Gregory Michael Brisbane, QLD 4000 (AU)	(72) Inventor: Mcmahon, Gregory Michael Brisbane, QLD 4000 (AU) (74) Representative: Jackson, Robert Patrick  Dehns St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)